San Diego (California) [US] August 2 (ANI): The body absorbs too much iron due to a condition known as hereditary hemochromatosis, which is brought on by a gene mutation. This causes tissue damage and diseases like liver disease, heart disease, and diabetes. However, scant and conflicting research had shown that the blood-brain barrier, a system of blood arteries and tissue made up of tightly spaced cells that guards against invasive pathogens and toxins, was responsible for sparing the brain from iron accumulation.